Direction: In questions, a part of the sentence is underlined. Below are given alternatives to the underlined part at (a), (b) and (c) which may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is (d).
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By studying AIDS has engaged many researchers in the last decade.
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- Important study
- Now that the study
- The study of
- No improvement
Correct Option: C
As we know that ,
Replace the word By studying AIDS :- the study of AIDS
Therefore , By studying AIDS is replaced by the study of AIDS in above given sentence .
